Can-soldering machine.



' G. H. STEWART; GAE SOLDEBING MACHINE. PLIOLTION FILED JULY 15, 1901. Y

. "Patented Sept-15,1908. l

26120376' ,H12/Waff en l e e y A y yggeea. STEWART;

cmpmmme MACHINE.

- nrmoe'riox rips JULY is, 1901.

Patented 'Sept 15,.

f A,:Zzz/efzvr. Geog@ J. yea/a r Y No. 898,937;

GEORGE n. STEWART, or Los ANGELES, cantonale? CAN-SOLDER'ING MACHINE. j

Application tiled-July 15, 1907. Serial lNo. 383,766.

. To all whom it may Concern.:

Be it known that I, GEORGE H. Srnwanr, a citlzen of the Lmted States, residing at Los Angeles, California, have invented certain new and useful Improvements in Can-Soldering Machines, of which thefollowing is a speci- .iicatiolL fingers 3 A an application of George My invention 'relates to machines for soldering cans and )articularly to machines for soldering the end seams.

The invention concerns the class of can soldering machines disclosed in Letters Iatent of the United States granted to George II. Stewart, July V11, Y 1905, 794691 and 794692, the former being adapted to solder side seams and the latter to solder end seams.

My present invent-ion is designed to provide a machine by which definite and exact quantities'fif solder may be fed to the end seams of the cans so that the feeding of the solder will be regulated by the diameter of the can and bea-r a deinite relation to the circumference ofthe. seam to be soldered.

In Patent 794691 above noted, are shown means for feeding definite and exact lengths of solder to the side seam of the can, the solder teeding action being controlled by the can itself so that cans of. dierent lengths may be fed through the machine, and the feeding of the solder will be automaticall regulated as to amount in accordance wit the length of the side seam. I design to accomplisdi the same result in connection with `the end seams.

The invention consists in the features and combination and arrangement oi arts hereinafter described and particular y pointed out in the claims.

In the accompanying drawings, Figure 1 is a side elevation of the machine embodying my improvements. Fig. 2 is a sectiona View looking from the right of Fig. 1. Fig. 3 is a plan View. Fig. 4 1s a View of a detail.

In these drawings 1 represents a. runway along which the cans travel in inclined position as shown inl Fig. 2, being caused to traverse said runway by a carrier chain i. having thereon to engage the sides of the can and roll the same from end to end of the runway. The cans travel in the direction of the arrow Fig. 1, and are subjected to the action of heating tlames before arriving at the soldering units 4, 5, G, where the solder is fed on to the can. These soldering units are substantially the same as those disclosed in Specification of Letters Patent.

H. Stewart, tiled Patented lsept'.15,1908. i

May 28, 1907, Serial Number 376175 and need no particular description herein excepting to point out that the solder is fed down through the tube 7 directl)v to the end seam as shown in Fig. 2, andthat the feed of solder is controlled by apa-wl S, arranged to engage and disengage a toothed wheel 9 on a constantly operating shaft 19, which carries the solder feed wheel 11 between whichand a. presser wheel 12 the solder wire 13 passes from anyv suitable source. The-re is a friction driving connection between the toothed wheel and a disk 14 which is splined to the shaft 10, and which is pressed into Contact with the toothed wheel vby means of a spring 15.

VThe toothed wheel is connected liridly with the solder feed wheel. So long as tIie pawl 8 engages the toothed wheel the friction drive will have no efl'ect thereupon but as soon as the pawl is lifted the friction drive will rotate the toot-hed wheel and consequently the solder wire vfeed wheel will be rotated to feed the solder. T he pawl is in turn controlled by the passage of the cans, and I aim to provide means whereby the control of the pawl and the time it is out of action with the toothed wheel will be in accordance with the diameter of the can which is to be soldered'so that the feeding action of the feed wheel on the solder will correspond in length of time and in quantity of solder fed to the diameter of the can, and consequently to the circumference of the can and length of the sea-1n. For this purpose I journal in suitable bearings adjacent the runway, a rocking member 16 having arms 1T carrying a. roller 18 which is arranged in inclined position and in the path of the end of the can so that as the cans come along this roller will be borne upon and pressed aside and will then contact with the end or head of the can which will sweep by the roller so that the roller will traverse thevcanV diametrically of its head. The moving aside of the roller 1S will, of course, turn the rocking member, and through an extension 20 of the pivot or shaft of said rocking member a rocking shaft or bar 21 will he turned, a universal joint connection at 22 with the said extension '29 and turning in any suitable vbearings in the frame. The upper end of this i rocking shaftor bar carries a pin or finger 23 which engages a notch 2-1 on the under side of the arm 25, which is pivoted at 26 to the machine frame and carries the pawl S 1before mentioned. The turning movement of the rock l l '2 l i f s shaft 21 will lcause the finger 23 to bear upon v a cam-like .action thereon andlift'the said arm iforivard edge toits rear edge and has dropped lthe extension 20 of thc roc-ker device will,

Vthe cans may be driven from the shaft 32 combination of means for moving the cans the inclined side of the notch 24 so as tohave 25 to withdraw the paivl S from the Ytoothed wheel 9.' The parts will be held in this position and consequently the feed of the solder will go on continuouslyuntil the can has passed the rocking device, or in other Words, until the roller 1S has moved across the head .of the can on the line of its diameter from its off from the edge of the head, a suitable spring being provided togive this action to the rocker device as soon as the edge of the can leaves the roller. As a result of this,

through the universal joint 22 turn the bar or shaft ll back vto its normal position and allow the lever 25 to move downwardly, thus engaging the pawl S with the toothed wheel and arresting the feed of the solder. In this Way I am enabled to feed definite and exact amounts of solder to correspond with the circumference of the seam at the head, and cans varying in size may thus be run through the machine Without requiring any special adjustment of the solder feeding device, the arrangement shown being adapted to feed solder to different sizes of cans in succession and in amounts corresponding to the length of the seam being soldered. i

I do not limit myself to the means for driving the various parts, but I have shown, for example, that the shaft 1() for driving the solder Wheels of the soldering units may be driven through bevel gearing 27 2S, from a shaft 29'journaled in suitable bearings and having a Worm wheel 30 operated "-.from a Worm 31 on a shaft 32 which may be driven through a pulley 33. The chain carrier for through the. bevel wheels 34, 35, the latter being on a shaft 36 bearing Yin the frame and carrying a sprocket wheel 37 to engage the links of the carrier chain.

I elain1z -1..In a can end-soldering machine, the

past the sollmoint,l means for heatingthe cans at and adjacent to the surfaces to be soldered, means for feeding solder to the end seam and controlling means for the solder feedingmeans, said controllingmeans engag ngThe'heaLLQMhQ can and having traversing movementproportional-he diameter of the same, the solder being fed only during the said traversing movement, substantially as described. Y

i 2. In a. can endsoldering machine, the combination of means for moving the cans past the solder point, means for heatingr the cans, means for feeding solder to the end seam, and controlling means for the vsolder feedine` means, said controlling means engagine thface of the head of the can and having re ative traversing movement across thc same, the solder being fed only during the said traversing movement, substantially as described.

3. In combination in a can end-soldering machine, means for supporting and moving a can past the solder point said means receiving cans of different diameters, means for heating the can prior to reaching the solder point, and mechanism for fee-ding the solder directlyY to the end seam of the can, said mechanism being controlled in its feeding action by the can to an extent corresponding to and varied automatically in accorda-nce ith the length of the end seam of the can, substantially as described.

4. In combination ina can end-soldering machine, means for moving a can past the solder point, means for heating the can, solder feeding devices, and a pivoted member arranged to bear on the can head, said pivoted member being moved aside by contact with the can andl thereby controlling the feed of the solder to the end seam, substantially as described.

In testimony whereof, I atlix my signature in presence of two'witnesses.

GEO. H. STEWART.

Witnesses:

134W. RENKIN, E. G. HOWELL. 

